143242664 has 8 divisors (see below), whose sum is σ = 268580010. Its totient is φ = 71621328.

The previous prime is 143242639. The next prime is 143242667. The reversal of 143242664 is 466242341.

It can be written as a sum of positive squares in only one way, i.e., 142324900 + 917764 = 11930^2 + 958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 143242664.

It is not an unprimeable number, because it can be changed into a prime (143242667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8952659 + ... + 8952674.

Almost surely, 2^143242664 is an apocalyptic number.

It is an amenable number.

143242664 is a deficient number, since it is larger than the sum of its proper divisors (125337346).

143242664 is a wasteful number, since it uses less digits than its factorization.

143242664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17905339 (or 17905335 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

The square root of 143242664 is about 11968.4027338655. The cubic root of 143242664 is about 523.2277827709.

The spelling of 143242664 in words is "one hundred forty-three million, two hundred forty-two thousand, six hundred sixty-four".